Case



M. KANTQR CASE 2 Sheets-Sheet 1 Original Filed Sept. 22, 1958 ATTORNEYSM. KANTOR July 28, 1964 CASE 2 She ets-Sheet 2 a INVENTOR flfgxg/su.164mm;

Original Filed Sept. 22, 1958 w iii ATTORNEYS United States Patent3,142,406 CASE Maxwell Kantor, Port Jervis, N.Y., assignor to Skydyue,Inc., Port Jervis, N.Y., a corporation of New York Original applicationSept. 22, 1958, Ser. No. 761,521, now

Patent No. 3,024,939, dated Mar. 13, 1962. Divided and this applicationJan. 31, 1962, Ser. No.,179,827

1 Claim. (Cl. 220) My invention relates to a case, and particularly to acase formed of sandwich material having a core and sheet metal faces.

This application is a division of my co-pending application Serial No.762,521, filed September 22, 1958, now Patent No. 3,024,939, grantedMarch 13, 1962.

It is an object of the invention to provide an improved case of thecharacter indicated having fewer open joints than a standard case and,therefore, less likely to open up or leak.

A more specific object is to provide an improved case of the characterindicated formed of a pair of sheets of sandwich material bent up so asto form a case.

Another object is to provide an improved case of simple construction andfewer open joints than the standard case, and which will be strong andsturdy.

Other objects and various features of novelty and invention will behereinafter pointed out or will become apparent to those skilled in theart.

Briefly stated, in a preferred form of the invention, I provide a sheetof sandwich material comprising a sheet of core material having sheetmetal secured to opposite faces thereof so as to form a strong sheet ofsandwich material. This sheet is designed to be bent up at spaced apartpoints and preferably at right angles thereto so as to form panels orsides of a case. The sheet metal covering at the bends is continuous andintact, thus making for leakproof joints at the bends. One or more otherpanels or sides are provided so as to interfit with the panels formed bybending of the first sheet so as to form a case.

In one specific form, there are two sheets or panels of sandwichmaterial, each composed of core material and sheet metal on oppositefaces thereof. One of these panels is bent up at the ends to form twoends and a bottom for a case, While the other panel, at right angles tothe first panel, has the ends bent up so as to form two other sides orends of the case; all of the panels are secured together in case form,as by means of channels along the vertical joints at the panels. In thisparticular form, the sheet metal of both of the panels at the bottom ispermanently secured together so that the case has a double bottom ofsheet metal.

In another form of the invention, one panel of sandwich materialcomprising a sheet of core material having sheet metal secured toopposite faces thereof is bent at spaced-apart points at right angles tothe sheet, and the ends are bent up at substantially right angles to themain body of the sheet so as to form a bottom and two ends or sides of acase. The metal bends both at the inside and the outside remaincontinuous and intact so as to provide a perfectly leakproof bend bothat the inside and the outside. Additional panels interfit with thebottom and upturned ends so as to form a case, and all of the panels andbase are held together in case form by suitable means, such as anglemembers secured to corners where panels come together.

Other variations and formations may be employed.

In the drawings, which show, for illustrative purposes only, preferredforms of the invention:

FIG. 1 is an isometric view of an elongated sheet of "ice metal havingspaced apart panels of core material, with sheet metal extending overthe core material;

FIG. 2 is an elongated sheet of sandwich material comprising a core andsheet metal on the top and bottom faces and secured thereto;

FIG. 3 is an isometric view of the two sheets or panels of FIGS. 1 and 2positioned relatively to each other prior to final bending and formationof a case;

FIG. 4 is an enlarged sectional view, taken substantially in the planeof the line 4-4 of FIG. 3, after the sides on one of the sheets havebeen bent up;

FIG. 5 is an enlarged sectional view taken substantially in the plane ofthe line 5-5 of FIG. 3 and showing all of the sides bent up;

FIG. 6 is an isometric view of a complete box or case showing the sidepanels secured together, as by means of angles;

FIG. 7 is an exploded view of a slightly modified form of case;

FIG. 8 is an isometric view of the case of FIG. 7, all parts beingfinally assembled; and

FIG. 9 is a sectional view, taken substantially in the plane of the line99 of FIG. 8.

In the form shown in FIGS. 1 to 6, there is a first sheet-metal elementcomprising an elongated sheet 5 having at the ends, sheets or panels 6-7of core material, and this core material is preferably covered over on0pposite faces by having the sheet metal of a base 5 bent up over thetop; the spaced-apart ends or panels thus formed are designated 8-9, andthey may be referred to as a pair of sandwich panels, spaced andintegrally connected by the base or outer metal sheet 5.

A second elongated panel of sandwich material is comprised of a sheet ofcore material 10 having facings of metal at opposite sides. In the formshown, the top of the core material 10 is covered by a sheet 11 whichpreferably extends around the ends of the core and underneath thereofand is secured to both faces. In the particular form shown, these bottomfaces or ends 1212 do not completely meet. For convenience, the two endsof the second elongated sandwich panel (shown in FIG. 2) are designated1314. This elongated sandwich panel, as shown in FIG. 2, is assembledwith the first panel (shown in FIG. 1) in the manner indicated in FIG.3. Here, the base 5 and the sheets of metal ends 12 are in directcontact with each other and are soldered or otherwise permanentlysecured together so that in effect there is a double sheet-metal basebeneath the two crossed members in FIG. 3.

When the parts are permanently assembled and the metal bases securedtogether, the ends 8-9 and 1314 are all bent up. As to the first panel(FIG. 1), the two ends 89 are turned up by bending the sheet metal 5 acrease locations 5', and the inner core edges (as at 8') of the twospaced-apart ends 89 rest directly on the top sheet 11 of the baseportion of the panel shown in FIG. 2; the pair of sandwich panels 8-9may thus be said to be spaced substantially the width of panel 11, thecreases 5'-5 being spaced by said width. The second panel (FIG. 2) isbent up at spaced-apart intervals, as indicated at 15, so as to form theupstanding panels 1314. These bends 1515 are preferably formed bybending in the sheet metal 11 along lines at right angles to the mainbody of the sheet. The core material, when soft enough, for examplebalsa wood, and the like, is also bent-in, so that the metal at theouter corners and at the inner corners remains continuous and intact,thus providing for a perfectly leak-tight corner, as will be understood.In the form illustrated, the sides or panels 8-9 fit in between thepanels 1314, and there are four vertical joints, as will be clear. Allof these panels are 3 held in position and the case held in caseformation by suitable means, such as the angle members 16 secured to thecorners.

This case, it will be clear then, has a double or reinforced metalbottom, and the bends at are all continuous and intact. Likewise, thebends in the sheetmetal base 5 of the first sheet are continuous andintact and the edges of the two panel parts 6-7 rest on top of the sheet11 on the upper panel of FIG. 2. Thus, the joints are relatively easy toseal and the angle members 16 will ordinarily suffice to hold all of thepanels together. Suitable adhesive and water-proofing may be appliedbetween the abutting parts of the panels so as to provide a perfectlytight and leak'proof case.

In the form shown in FIGS. 7 to 9, there is a main panel of sandwichmaterial comprising a sheet of core material 20 which is covered by ametal sheet 21 which extends along the inside of the bottom and theinside of the two ends, as shown particularly in FIG. 7. A second metalsheet 22 is secured to the outer side of the core material 20, and thetop ends extend over the top edges of the panels and overlap the sheet21, as indicated at 23. This first panel of sandwich material comprisingthe metalclad core 20 is bent at the corners, as indicated, and thebends are preferably such that the core material is bent and the innersheet 21 is tucked inwardly, as indicated at 24; at the same time, theouter sheet is bent at the corners so that the metal of both the innerand outer sheets at the corners, where bent, remains continuous andintact. Thus, a thoroughly leak-proof joint is provided at the bentcorners.

The central part of the sandwich sheet just described and the twoupstanding ends form the bottom and two sides of a case. The other twosides 25-26 are preferably formed of sandwich material and arecompletely surrounded on both faces and the top and bottom edges bysheet metal. These panels 25-26 interfit with the bottom and upstandingends on the first panel or sheet, and, in the form shown, these sides2526 extend between the upstanding sides on the bent-up panel.

All four sides and the bottom are held together in case formation bysuitable means, such as the angle members 27, which extend along thevertical edges and along the bottom edges. Here again, wherever panelsor sides come together, they are preferably treated with suitableadhesive and waterproofing material so that a perfectly tight case willresult.

In the case shown in FIGS. 7 to 9, as well as in the case shown in FIGS.1 to 6, there are fewer joints to be sealed than in the conventionalcase, formed by separate side and bottom panels. The cases are strongbecause of integral base and side formation. In addition, the cases arerelatively easy to manufacture and may be made completely tight at suchseams as must be treated to make them tight.

While the invention has been described in considerable detail, andpreferred forms illustrated, it is to be understood that various changesand modifications may be made within the scope of the invention, asdefined in the appended claim.

I claim:

A case comprising a first sheet of sandwich material having a corematerial between inner and outer metal faces, one of said faces beingfolded over the opposite ends of said sheet material to overlie theopposite face to enclose the ends, said opposite ends of said sandwichsheet being bent up at substantially right angles to the sheet alonglines spaced apart from each other, said bends occurring in both theinner and outer metal faces and in the core material leaving the metalfaces continuous and intact at said bends, said sandwich sheet with saidopposite ends constituting essentially two opposite sides and the bottomof a case, a pair of sandwich sheets having core material between innerand outer metallic face sheets substantially the same as said sheet ofsandwich material, the Outer metallic face sheets of said pair beingintegrally joined by a common sheet which also spaces the sandwichsheets of said pair by an amount substantially equal to the width ofsaid first sandwich sheet; said pair of sandwich sheets being folded upfrom said common sheet with said common sheet overlapping said bottom,and said pair of sandwich sheets being dimensioned to fit within theopen sides formed by said first sheet of sandwich material with itsbent-up ends to form a case, and angle means at at least the upstandingedges of said case for fixedly sealing the joints between said firstsheet of sandwich material and said pair of sandwich sheets to form acase.

References Cited in the file of this patent UNITED STATES PATENTS641,207 Higham Jan. 9, 1900 1,009,993 Parrish Nov. 28, 1911 1,488,533Flood Apr. 1, 1924 1,791,367 McVay et al. Feb. 3, 1931 2,192,992 BohnkeMar. 12, 1940 2,246,097 Illges June 17, 1941 2,274,765 Zalkind Mar. 3,1942 2,523,145 Robinson Sept. 19, 1950

